Development of a Novel ssDNA Sequence for a Glycated Human Serum Albumin and Construction of a Simple Aptasensor System Based on Reduced Graphene Oxide (rGO)

Diabetes is one of the top 10 global causes of death. About one in 11 global adults have diabetes. As the disease progresses, the mortality rate increases, and complications can develop. Thus, early detection and effective management of diabetes are especially important. Herein, we present a novel g...

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Bibliographic Details
Published in:Biosensors (Basel) 2020-10, Vol.10 (10), p.141
Main Authors: Kim, A-Ru, Choi, Yeongmi, Kim, Sang-Heon, Moon, Hyun-Seok, Ko, Jae-Ho, Yoon, Moon-Young
Format: Article
Language:English
Subjects:
Affinity
Albumin
Analysis
aptamer
Aptamers
Binding sites
Biosensing Techniques
Complications
Composition
Diabetes
Diabetes mellitus
Diagnosis
DNA, Single-Stranded - analysis
Enzymes
Fasting
Fluorescence
Glucose
glycated human serum albumin
Graphene
Graphite
Human serum albumin
Humans
Insulin
Mortality
Nucleic acid aptamers
reduced graphene oxide
SELEX
SELEX Aptamer Technique
Serum albumin
Serum Albumin, Human - analysis
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Summary:Diabetes is one of the top 10 global causes of death. About one in 11 global adults have diabetes. As the disease progresses, the mortality rate increases, and complications can develop. Thus, early detection and effective management of diabetes are especially important. Herein, we present a novel glycated human serum albumin (GHSA) aptamer, i.e., GABAS-01, which has high affinity and specificity. The aptamer was selected by reduced graphene oxide-based systematic evolution of ligands by exponential enrichement (rGO-based SELEX) against GHSA. After five rounds of selection through gradually harsher conditions, GABAS-01 with high affinity and specificity for the target was obtained. GABAS-01 was labeled by FAM at the 5'-end and characterized by measuring the recovery of a fluorescence signal that is the result of fluorescence quenching effect of rGO. As a result, GABAS-01 had low-nanomolar Kd values of 1.748 ± 0.227 nM and showed a low limit of detection of 16.40 μg/mL against GHSA. This result shows the potential application of GABAS-01 as an effective on-site detection probe of GHSA. In addition, these properties of GABAS-01 are expected to contribute to detection of GHSA in diagnostic fields.
ISSN:2079-6374
2079-6374
DOI:10.3390/bios10100141